• E. Gschwendtner, A. Apyan, K. Elsener, A. Sailer, J.A. Uythoven
  CERN, Geneva
• R. Appleby, M.D. Salt
  UMAN, Manchester
• A. Ferrari, V.G. Ziemann
  Uppsala University, Uppsala

The 1.5TeV CLIC beams, with a total power of 14MW per beam, are disrupted at the interaction point due to the very strong beam-beam effect. As a result, some 3.5MW reach the main dump in form of beamstrahlung photons. About 0.5MW of e⁺e^- pairs with a very broad energy spectrum need to be disposed along the post-collision line. The conceptual design of this beam line will be presented. Emphasis will be on the optimization studies of the CLIC post-collision line design with respect to the energy deposition in windows, dumps and scrapers, on the design of the luminosity monitoring for a fast feedback to the beam steering and on the background conditions for the luminosity monitoring equipment.